Bellows Assemblies, Some Recent Projects

Given the recent holiday period its perhaps not surprising that we’ve been busy supplying a number of bellows assemblies to facilitate planned maintenance programmes where existing joints have been found to be in need of replacement during plant shutdown periods. Expansion joints for vital services such as steam distribution pipe work have been particularly common… Main engine stainless steel exhaust bellows 1000mm (40”) DN Single axial bellows for a main engine diesel exhaust on a large fishing trawler. We received the failed bellows assembly and manufactured a new bellows membrane, internal flow sleeve and swivel facings and re-assembled using the flanges from the original assembly, thus saving time and money by not having to provide new flanges. The rotating flanges make alignment of the bolt holes during installation much easier for the engineers on board the vessel. Double tied lateral steam bellows 450mm (18”) DN Double tied lateral bellows for 16 Bar/230 Psi steam service pipe work in factory premises. The units were designed to offer +/-50mm lateral displacement and had 4 No tie bar assemblies designed to restrain the pressure thrust generated following pressurisation of the system. Double hinged (Angular) stainless steel bellows 300mm (12”) Double hinged bellows supplied at 2,800mm long, designed for 12 Bar/175 Psi steam service pipe work in factory premises. The flanges and hinge components were supplied in carbon steel, all other parts of the assembly were manufactured in either 316 or 321 stainless steel. Single axial bellows 200mm DN Single axial flanged bellows working at 0.5 Bar/7 Psi on the outlet pipe work of a gas clean-up system to the vent air burner at a Waste Water Treatment Plant. Bellows were manufactured in Inconel 625 throughout to replace 316 stainless steel bellows that had failed prematurely due to pitting corrosion caused by the formation of acidic condensate in the line following a plant shut down. Single Gimbal pipe end-bellows 300mm (12”) DN single gimbal (or universal angular) pipe-end (or universal angular) bellows designed to accommodate movements in any plane and supplied at 515mm long for steam at 1 Bar/120 Deg C. The bellows and internal sleeves were manufactured in 321 stainless steel with all pipe, gimbal ring and hinge assembly components manufactured in carbon steel. The unit was designed to accommodate +/-8 degrees of angulation. Are you looking for a quality manufacturer and supplier of bellows assemblies? For more information on the complete range of products and services that BOSS bellows offer or to speak to a technical advisor, please do not hesitate to contact us.